Dog bed



FIG. 1 is an enlarged perspective view taken from the front, left side and top of a dog bed.

FIG. 2 is a front elevational view.

FIG. 3 is a top plan view.

FIG. 4 is a rear elevational view.

FIG. 5 is a bottom plan view; and,

FIG. 6 is a right side elevational view with the left being a mirror image. 

The ornamental design for a dog bed, as shown. 